Prabakaran initially contested for the Batu federal seat in Kuala Lumpur on independent ticket where he should have faced opponents Chua Tian Chang from PH and PKR who was going to defend his seat, Dominic Lau Hoe Chai from Barisan Nasional (BN) and Parti Gerakan Rakyat Malaysia (GERAKAN), Azhar Yahya from the Malaysian Islamic Party (PAS) as well as another independent Panjamorthy Muthusami.
However, Chua was disqualified from contesting in the election after returning officer Anwar Mohd Zain had made the decision based on a Shah Alam High Court ruling on 2 March 2018 which fined Chua RM 2,000 for insulting the modesty of a police officer that removed the eligibility of him in contesting.
Chua decried the decision and accused the political opponents of BN by stating that "They are using dirty tactics to thwart the victory of PH".
[2] Chua then accepted the offer and turned his support for Prabakaran and helped the latter in campaigning efforts to prevent a walkover victory for BN in Batu.
After his victory, he quickly established his priorities as the Batu MP ranging from fighting for the rights of the youths, lowering the cost of living for young families, bringing down the voting age from 21 to 18, improving public infrastructure, making towns and cities more disabled-friendly, improving vocational and tertiary education to increasing internship opportunities for youths.
He stated that with this, he would strive to perform all tasks including empowering young people to become leaders with high self-esteem.
On 30 May 2022, he issued a statement showing gratitude to all Batu PKR division members for voting for him and seniors for guiding him through their vast experiences.
She also agreed with the decision made by two separate High Courts which ruled that qualifications and rights of Chua to contest were not affected due to RM2,000 levied against him for insulting a policeman.
In response, Prabakaran clarified that he was not stepping down as Batu MP and said he would like to contribute his energy and effort for the good of PKR in realising the "reformasi" (reforms) agenda and he would serve the people in a transparent and fair manner and would not drop them halfway through.
He also highlighted that a team member of Prabakaran contesting against him as Batu PKR division chief namely Stephen Niles also attended the so-called 'traitors' dinner, referring to the alleged BERSATU and GERAKAN fast breaking event, as well as attaching a lengthy response from Niles about his attendance at the event last year.
Prabakaran then responded on the same platform, noting that he was simply questioning the authenticity of the photo and did not intend to defame Chua as claimed.
On a separate note, Prabakaran also stressed that he had always upheld the party constitution of PKR and rejected the political culture of defamation or colluding with traitors.